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Publication numberUS4389952 A
Publication typeGrant
Application numberUS 06/277,388
Publication dateJun 28, 1983
Filing dateJun 25, 1981
Priority dateJun 30, 1980
Fee statusLapsed
Also published asDE3122935A1
Publication number06277388, 277388, US 4389952 A, US 4389952A, US-A-4389952, US4389952 A, US4389952A
InventorsErnst Dreier, Richard Hoss
Original AssigneeFritz Gegauf Aktiengesellschaft Bernina-Machmaschinenfabrik
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Needle bar operated trimmer
US 4389952 A
Abstract
A holder (3) for replacing the presser foot of a sewing machine comprising a foot plate (3a) attached to a presser bar (1) of the sewing machine (2), and a presser foot sole (8) operatively associated with the holder and being supported in a pendulating and vertically resilient fashion. A fixed blade (5) is adjustably mounted to the foot plate (3a) of the holder (3). A movable blade (9) is fashioned as a two-armed lever and is pivotably supported in a vertical plane. The movable blade (9) operatively engages the lower arm (13a) of a two-armed intermediate toggle joint with a carrier bolt (13). The other arm (13b) of the toggle joint has a curved cam contour (14). A control pin (15) is guided in the curved path of the cam contour (14), said pin being disposed on a control lever (16) supported (16a) at one end by the holder (3). The other end of the control lever is provided with a fork (6a) at the needle bar (6). The device, mounted as a unit by attaching the holder (3) to the presser bar (1) and by simultaneously attaching the fork (16b) to the cross pin (6b), is ready for operation without any further mounting or adjustment. During the reciprocating motion of the needle bar (6), the scissor-like knife (5, 9) cuts the edge of the length of material conveyed over the foot plate (3a) and underneath the pressure foot sole (8). The thus-cut edge can simultaneously be sewed to prevent raveling.
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Claims(9)
What is claimed is:
1. An attachment for use with a sewing machine for cutting the edges of material, said sewing machine containing a needle bar and a presser bar, which comprises,
a fixed blade containing a cutting edge and a movable blade, said movable blade being driven by said needle bar of the sewing machine,
a holding means for mounting the fixed blade thereto, said holding means being, in turn, detachably mounted at one end to said presser bar of the sewing machine and provided at the other end thereof with a foot plate,
a presser foot sole operatively connected to said foot plate in a pendulating fashion and said movable blade being pivotable connected to said holding means, and
an intermediate articulated lever system supported by said holding means, said intermediate articulated lever system providing driving connection between the needle bar and the movable blade wherein said movable blade is a double-armed lever, one arm being provided with a cutting edge which cooperate with the cutting edge of the fixed blade to provide a scissor-like action and the other arm thereof being pivotally connected by slot means to said needle bar through said intermediate articulated lever system.
2. The attachment of claim 1 wherein the intermediate articulated lever system comprises
an intermediate toggle joint and a control lever,
one end of said intermediate toggle joint containing a carrier both for engagement with the slot in the double armed lever of the movable blade, the other end of said intermediate toggle joint being provided with a control cam contour, and
one end of said control lever being provided with a slot for sliding engagement with the needle bar whereas the other end of the control lever contains a control pin, said control pin being in sliding engagement with said control cam contour.
3. The attachment of claim 2 wherein the needle bar contains a needle mount provided with a cross pin, said cross pin being in sliding engagement with the slot of said control lever.
4. The attachment of claim 2 wherein the control lever contains a bearing axle disposed adjacent said control pin, and the control cam contour of the intermediate toggle lever possesses at its upper end a circular-arc-shaped curved branch, the radius of which is equal to the axial distance of the control pin from the bearing axle of the control lever, and possesses at its lower end a linear curve branch, whereby during the first phase of the downward movement of the needle bar leading to the penetration of the material by the needle, the scissor-like unit formed by the fixed and movable blades remains open and the cutting step takes place only during the lower movement phase of the needle bar.
5. The attachment of claim 4 wherein the cutting edges of the fixed and movable blades lie in a vertical plane extending through or substantially through the outermost stitch entrance point of the needle, on the operator's side.
6. The attachment according to claim 5 wherein the bearing axle of the movable blade lies in front of the stitch-in point of the needle and above the blade edge of the fixed blade.
7. The attachment according to any one of claims 1 or 2 to 6 wherein the fixed blade is adjustably mounted to the foot plate of the holding means.
8. The attachment according to claim 7 wherein the foot plate and the fixed blade possess a ramp-like configuration at their front faces so that the material to be cut can run onto these elements, and the foot plate contains a lower recess permitting the removal of the cut-off material.
9. The attachment according to claim 8 wherein the foot sole is articulated to the holding means in a vertically resilient fashion.
Description
BACKGROUND AND SUMMARY OF THE INVENTION

The present invention relates to an attachment to a sewing machine for cutting the edges of material comprising a fixed blade and a movable blade drivable by the needle bar of the machine.

Attachments to sewing machines for cutting the edges of sewing material moving toward the sewing site, are known in various versions. Ordinarily, the blade which is driven by the needle bar and moves essentially in a vertical direction cooperates with a counter blade fixedly connected to a part of the machine. In this connection, the movable blade is either directly mounted to the needle bar or is arranged on a blade holder fastened on the working surface of the machine, as illustrated, for example, in Italian Pat. No. 603,617. The fixed counter blade is either a correspondingly constructed edge of the needle plate or a cutting edge mounted thereto.

The conventional attachments are cumbersome in handling. Mounting and adjusting operations are required with each use. Thus, it is necessary, for example to exchange the needle plate, and the blade holder must be attached on the working surface. To obtain a clean cut, an exact adjustment of the two blades with respect to each other is then necessary in each instance.

To avoid these disadvantages, the present invention has the purpose of providing an attachment of the aforementioned type which can be mounted as a unit by a few simple manipulations and requires no adjustment whatever. For this purpose, the attachment of the present invention is characterized by a holder for the fixed blade, which is detachably affixed to the presser bar of the sewing machine and is provided with a foot plate and a presser sole articulated thereto in a pendulating fashion, whereby the movable blade articulated to the holder is in driving connection with the needle bar by way of an articulated lever mechanism supported at the holder. The lever connection between the needle bar and the movable blade is advantageously such that the movable blade during the downward stroke of the needle bar is pivoted about a horizontal axis lying above the cutting edge of the fixed blade and, in the advancement direction of the length of material, behind the point of engagement of the two blade edges, this pivoting being done in the cutting sense, but only at the point when the needle bar has reached the central position corresponding to the entrace of the needle into the length of material, or has exceeded such position. In the case of sewing machines equipped for zigzag sewing, the arrangement is such that the lateral distance of the cutting plane from the center of the stitching width of the machine is at most equal to or somewhat smaller than one-half the stitch width, wherein the movable blade is recessed in the stitching zone of the needle in such a way that the needle can penetrate within or outside of the blade plane, thus making it possible to sew around the cutting edge of the length of material to prevent raveling. However, an important feature is the installation of all of its parts at a common holder, forming a unit, whereby the device can be affixed to the presser bar of the sewing machine in place of a customary presser foot and is ready for operation without previous adjusting or assembly work. Since the drive derivation from the needle bar for the movable blade is suitably effected by means of a forked lever engaging a dog at the needle mount, the fixation of the device to the presser bar and the drive connection of the device with the needle bar can be executed in the same operating step without any problems.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will become more fully understood from the detailed description given hereinbewlow and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present invention, and wherein:

FIGS. 1, 2 and 3 show, respectively, a lateral view of the device, partially in section, in various needle positions,

FIG. 4 shows a top view of FIG. 1, partially in section,

FIG. 5 shows a frontal view of FIG. 1, likewise partially in section and

FIG. 6 is a perspective view of the pressure foot of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

A holder 3 provided with a foot plate 3a is detachably mounted to the presser bar 1 of a sewing machine 2, equipped with a means for zigzag stitching. Mounting is accomplished with the aid of a clamping means 1a (serving for the attachment of a customary presser foot). By means of screws 4, a blade 5, oriented with its working edge in parallel to the advancing direction of the machine, is attached to the foot plate 3a extending laterally with respect to the presser bar 1 toward the operator's side and forwardly toward the material feeding side of the machine. The tip of the blade terminates directly in front of the stitching zone of the needle 7 attached to the needle bar 6. The arrangement is such that the blade edge 5a (FIG. 4) is in alignment with the needle penetration point 7a on the operator's side at the largest (or also slightly smaller) needle displacement toward the operator's side of the machine. Furthermore, as can be readily seen in FIG. 6, a presser foot sole 8 with a stitching slot 8a is supported at the holder 3 to be pendulating in a vertical plane and is axially movable to a limited extent under a spring load. The presser foot sole is disposed in the usual way above the feed of the sewing machine. Furthermore, a movable blade 9 fashioned as a double lever 9a, 9b bent at an obtuse angle is arranged to be pivotable in a vertical plane at the support foot plate 3a of the holder 3. The cutting edge 9c of the blade 9, arranged with its axis 10 in the zone of the tip of the fixed blade 5 but above the cutting edge 5a, is provided at the forwardly projecting lever arm 9a. As can be seen from FIG. 4, the movable blade 9 is offset behind the cutting edge 9c, i.e. in the region of the bearing point and at the arm 9b, as shown at 9d, in such a way that a lateral displacement of the needle 7 is also possible, somewhat beyond the line of alignment of the cutting edges 5a, 9c. The arm 9b of the blade 9 is provided with a receiving slot 11 for the carrier bolt 12 on the one arm 13a of a two-armed intermediate toggle joint 13. The intermediate toggle joint 13, pivotably mounted about a horizontal axle journal 13c at the holder 3 and being slightly bent toward the operator's side of the machine, is equipped at its other arm 13b with a control cam contour 14 wherein a control pin 15 is guided. The control pin 15 is disposed on a control lever 16, which is pivotably mounted at the holder 3 on one end by means of a bearing pin 16a which is parallel to the bearing pins 10 and 13c and which is provided with a fork 16b on its other end. The fork 16b, engaging with a cross pin 6b of the needle mount 6a, couples the movable blade 9 via the intermediate toggle joint 13 with the needle bar 6. It is to be noted that the control cam contour 14 of the intermediate toggle joint 13 extending approximately in the longitudinal direction of the lever arm 13b exhibits a circular-arc-shaped branch 14a toward the lever end. The central radius of this arc corresponds to the axial distance of the control pin 15 from the bearing pin 16a, with the branch 14a passing over toward the bearing pin 13c into a linear branch 14b.

The mode of operation of the aforedescribed edge cutting device is as follows: First of all, the normal presser foot of the machine is taken off and, by means of the same mounting mechanism, the holder 3 of the cutting device is attached to a raised presser bar 1 by attaching the fork 16b to the cross pin 6b of the needle mount 6a when the needle bar 6 is in its upper end position. During the lowering of the presser bar 1, the foot plate 3a with the fixed blade 5, as well as the resilient presser foot sole 8 come into contact with the operating surface of the sewing machine. The movable blade 9 is held, with its maximum opening of the angle of articulation between the control lever 16 and the blade arm 9b, by means of the control lever 16 and the intermediate toggle joint 13 in its inactive position, i.e., according to FIG. 1 in a position maximally pivoted in the clockwise direction. In this connection, it can be seen that the control pin 15 is located in the upper end portion of the circular-arc-shaped cam contour branch 14a of the intermediate toggle joint 13. The device is thus immediately ready for operation without any additional assembly, alignment, or adjustment being necessary. The length of material to be worked on is, at this point, conveyed over the foot plate 3a, having the form of a ramp on the front side, underneath the presser foot sole 8, and, with the sewing machine in operation, by the feeder means between the scissor-like gaping blade edges 5a and 9c. During the downward stroke of the needle bar 6, from a position as shown in FIG. 1 to a position as shown in FIG. 2, the control lever 16 is initially pivoted in the counterclockwise direction without affecting the intermediate toggle joint 13. During this step, the control pin 15 moves downwardly along the circular-arc-shaped cam contour branch 14a. At the same time, the needle 7 stitches into the length of material. During the further downward motion of the needle bar 6, the control pin 15 enters the linear branch 14b of the cam contour 14, effecting a pivoting of the intermediate toggle lever 13 in the clockwise direction. The toggle lever, by way of the carrier bolt 12, in turn pivots the movable blade 9 in the counterclockwise direction. As a result, the edge of the length of material is cut, while simultaneously executing a sewing step in correspondence with the set stitch in the zone denoted by a in FIG. 2. During the subsequent upward movement of the needle bar 6, the scissor-like knife 5, 9 opens up again, and the above-described cycle is repeated. it is to be kept in mind that the cut-off edge of the length of material is removed in an appropriate bottom recess 17 in the foot plate 3a. In case the cut-off portion has an abnormal width, this portion can also be removed by transporting it over the foot plate 3a.

It can be seen from the above description that, simultaneously with cutting the edge of the length of material, the latter can also be sewed around the edge to prevent raveling, or can be provided with any desired seam depending on the set stitch pattern and position. However, it is also possible to cut a length of material without the simultaneous formation of a seam, by removing the needle 7 or, in the case of a straight stitch setting, by pivoting the needle to such an extent that its stitching site is outside of the plane of the cutting edge (on the operator's side). Although the attachment normally serves for the cutting off or cutting to size of fabrics, other materials, such as, for example, paper or leather, can likewise be worked on correspondingly. Thanks to the vertically resilient mounting of the presser foot sole 8, even relatively thick materials do not cause an upward urging of the presser bar 1, as is the case in conventional presser bars. Due to the mounting of the presser foot sole 8, which is vertically resilient with respect to the foot plate 3a which always rests on the working surface of the sewing machine, the cutting function of the device remains independent of the respective thickness of the material.

The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US947506 *Jun 14, 1909Jan 25, 1910Isidor WeinbachCombination pressure-foot and trimming attachment for sewing-machines.
US2443369 *Mar 13, 1946Jun 15, 1948Antonio AlifanoEdge cutter attachment for sewing machines
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4463693 *Aug 22, 1983Aug 7, 1984Fritz Gegauf Bernina Sewing Machine Manufacturers LimitedCutting attachment for a sewing machine
US4625663 *Feb 5, 1986Dec 2, 1986Mikio MoriWork cutting attachment for zigzag sewing machines
US4811672 *Nov 25, 1986Mar 14, 1989Nishi Seisakusho Co., Ltd.Edge trimmer guide for sewing machine
US4984525 *Aug 23, 1989Jan 15, 1991Mikio MoriWork cutting attachment for zigzag sewing machines
US7384443Dec 12, 2003Jun 10, 2008Tdy Industries, Inc.Hybrid cemented carbide composites
US7513320Dec 16, 2004Apr 7, 2009Tdy Industries, Inc.Cemented carbide inserts for earth-boring bits
US7597159Sep 9, 2005Oct 6, 2009Baker Hughes IncorporatedDrill bits and drilling tools including abrasive wear-resistant materials
US7687156Aug 18, 2005Mar 30, 2010Tdy Industries, Inc.Composite cutting inserts and methods of making the same
US7703555Aug 30, 2006Apr 27, 2010Baker Hughes IncorporatedDrilling tools having hardfacing with nickel-based matrix materials and hard particles
US7703556Jun 4, 2008Apr 27, 2010Baker Hughes IncorporatedMethods of attaching a shank to a body of an earth-boring tool including a load-bearing joint and tools formed by such methods
US7775287Dec 12, 2006Aug 17, 2010Baker Hughes IncorporatedMethods of attaching a shank to a body of an earth-boring drilling tool, and tools formed by such methods
US7776256Nov 10, 2005Aug 17, 2010Baker Huges IncorporatedEarth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies
US7784567Nov 6, 2006Aug 31, 2010Baker Hughes IncorporatedEarth-boring rotary drill bits including bit bodies comprising reinforced titanium or titanium-based alloy matrix materials, and methods for forming such bits
US7802495Nov 10, 2005Sep 28, 2010Baker Hughes IncorporatedMethods of forming earth-boring rotary drill bits
US7841259Dec 27, 2006Nov 30, 2010Baker Hughes IncorporatedMethods of forming bit bodies
US7846551Mar 16, 2007Dec 7, 2010Tdy Industries, Inc.Composite articles
US7913779Sep 29, 2006Mar 29, 2011Baker Hughes IncorporatedEarth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials, and methods for forming such bits
US7954569Apr 28, 2005Jun 7, 2011Tdy Industries, Inc.Earth-boring bits
US7997359Sep 27, 2007Aug 16, 2011Baker Hughes IncorporatedAbrasive wear-resistant hardfacing materials, drill bits and drilling tools including abrasive wear-resistant hardfacing materials
US8002052Jun 27, 2007Aug 23, 2011Baker Hughes IncorporatedParticle-matrix composite drill bits with hardfacing
US8007714Feb 20, 2008Aug 30, 2011Tdy Industries, Inc.Earth-boring bits
US8007922Oct 25, 2007Aug 30, 2011Tdy Industries, IncArticles having improved resistance to thermal cracking
US8025112Aug 22, 2008Sep 27, 2011Tdy Industries, Inc.Earth-boring bits and other parts including cemented carbide
US8074750Sep 3, 2010Dec 13, 2011Baker Hughes IncorporatedEarth-boring tools comprising silicon carbide composite materials, and methods of forming same
US8087324Apr 20, 2010Jan 3, 2012Tdy Industries, Inc.Cast cones and other components for earth-boring tools and related methods
US8104550Sep 28, 2007Jan 31, 2012Baker Hughes IncorporatedMethods for applying wear-resistant material to exterior surfaces of earth-boring tools and resulting structures
US8137816Aug 4, 2010Mar 20, 2012Tdy Industries, Inc.Composite articles
US8172914Aug 15, 2008May 8, 2012Baker Hughes IncorporatedInfiltration of hard particles with molten liquid binders including melting point reducing constituents, and methods of casting bodies of earth-boring tools
US8176812Aug 27, 2010May 15, 2012Baker Hughes IncorporatedMethods of forming bodies of earth-boring tools
US8201610Jun 5, 2009Jun 19, 2012Baker Hughes IncorporatedMethods for manufacturing downhole tools and downhole tool parts
US8225886Aug 11, 2011Jul 24, 2012TDY Industries, LLCEarth-boring bits and other parts including cemented carbide
US8230762Feb 7, 2011Jul 31, 2012Baker Hughes IncorporatedMethods of forming earth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials
US8261632Jul 9, 2008Sep 11, 2012Baker Hughes IncorporatedMethods of forming earth-boring drill bits
US8272295Dec 7, 2006Sep 25, 2012Baker Hughes IncorporatedDisplacement members and intermediate structures for use in forming at least a portion of bit bodies of earth-boring rotary drill bits
US8309018Jun 30, 2010Nov 13, 2012Baker Hughes IncorporatedEarth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies
US8312941Apr 20, 2007Nov 20, 2012TDY Industries, LLCModular fixed cutter earth-boring bits, modular fixed cutter earth-boring bit bodies, and related methods
US8317893Jun 10, 2011Nov 27, 2012Baker Hughes IncorporatedDownhole tool parts and compositions thereof
US8318063Oct 24, 2006Nov 27, 2012TDY Industries, LLCInjection molding fabrication method
US8322465Aug 22, 2008Dec 4, 2012TDY Industries, LLCEarth-boring bit parts including hybrid cemented carbides and methods of making the same
US8388723Feb 8, 2010Mar 5, 2013Baker Hughes IncorporatedAbrasive wear-resistant materials, methods for applying such materials to earth-boring tools, and methods of securing a cutting element to an earth-boring tool using such materials
US8403080Dec 1, 2011Mar 26, 2013Baker Hughes IncorporatedEarth-boring tools and components thereof including material having hard phase in a metallic binder, and metallic binder compositions for use in forming such tools and components
US8440314Aug 25, 2009May 14, 2013TDY Industries, LLCCoated cutting tools having a platinum group metal concentration gradient and related processes
US8459380Jun 8, 2012Jun 11, 2013TDY Industries, LLCEarth-boring bits and other parts including cemented carbide
US8464814Jun 10, 2011Jun 18, 2013Baker Hughes IncorporatedSystems for manufacturing downhole tools and downhole tool parts
US8490674May 19, 2011Jul 23, 2013Baker Hughes IncorporatedMethods of forming at least a portion of earth-boring tools
US8512882Feb 19, 2007Aug 20, 2013TDY Industries, LLCCarbide cutting insert
US8637127Jun 27, 2005Jan 28, 2014Kennametal Inc.Composite article with coolant channels and tool fabrication method
US8647561Jul 25, 2008Feb 11, 2014Kennametal Inc.Composite cutting inserts and methods of making the same
US8697258Jul 14, 2011Apr 15, 2014Kennametal Inc.Articles having improved resistance to thermal cracking
US8746373Jun 3, 2009Jun 10, 2014Baker Hughes IncorporatedMethods of attaching a shank to a body of an earth-boring tool including a load-bearing joint and tools formed by such methods
US8758462Jan 8, 2009Jun 24, 2014Baker Hughes IncorporatedMethods for applying abrasive wear-resistant materials to earth-boring tools and methods for securing cutting elements to earth-boring tools
US8770324Jun 10, 2008Jul 8, 2014Baker Hughes IncorporatedEarth-boring tools including sinterbonded components and partially formed tools configured to be sinterbonded
US8789625Oct 16, 2012Jul 29, 2014Kennametal Inc.Modular fixed cutter earth-boring bits, modular fixed cutter earth-boring bit bodies, and related methods
US8790439Jul 26, 2012Jul 29, 2014Kennametal Inc.Composite sintered powder metal articles
US8800848Aug 31, 2011Aug 12, 2014Kennametal Inc.Methods of forming wear resistant layers on metallic surfaces
US8808591Oct 1, 2012Aug 19, 2014Kennametal Inc.Coextrusion fabrication method
US8841005Oct 1, 2012Sep 23, 2014Kennametal Inc.Articles having improved resistance to thermal cracking
US8858870Jun 8, 2012Oct 14, 2014Kennametal Inc.Earth-boring bits and other parts including cemented carbide
US8869920Jun 17, 2013Oct 28, 2014Baker Hughes IncorporatedDownhole tools and parts and methods of formation
US8905117May 19, 2011Dec 9, 2014Baker Hughes IncoporatedMethods of forming at least a portion of earth-boring tools, and articles formed by such methods
US8978734May 19, 2011Mar 17, 2015Baker Hughes IncorporatedMethods of forming at least a portion of earth-boring tools, and articles formed by such methods
US9016406Aug 30, 2012Apr 28, 2015Kennametal Inc.Cutting inserts for earth-boring bits
US9163461Jun 5, 2014Oct 20, 2015Baker Hughes IncorporatedMethods of attaching a shank to a body of an earth-boring tool including a load-bearing joint and tools formed by such methods
US9192989Jul 7, 2014Nov 24, 2015Baker Hughes IncorporatedMethods of forming earth-boring tools including sinterbonded components
US9200485Feb 9, 2011Dec 1, 2015Baker Hughes IncorporatedMethods for applying abrasive wear-resistant materials to a surface of a drill bit
US9266171Oct 8, 2012Feb 23, 2016Kennametal Inc.Grinding roll including wear resistant working surface
US9428822Mar 19, 2013Aug 30, 2016Baker Hughes IncorporatedEarth-boring tools and components thereof including material having hard phase in a metallic binder, and metallic binder compositions for use in forming such tools and components
US9435010Aug 22, 2012Sep 6, 2016Kennametal Inc.Composite cemented carbide rotary cutting tools and rotary cutting tool blanks
US9506297Jun 4, 2014Nov 29, 2016Baker Hughes IncorporatedAbrasive wear-resistant materials and earth-boring tools comprising such materials
US9687963Mar 10, 2015Jun 27, 2017Baker Hughes IncorporatedArticles comprising metal, hard material, and an inoculant
US9700991Oct 5, 2015Jul 11, 2017Baker Hughes IncorporatedMethods of forming earth-boring tools including sinterbonded components
US9790745Nov 24, 2014Oct 17, 2017Baker Hughes IncorporatedEarth-boring tools comprising eutectic or near-eutectic compositions
US20050126334 *Dec 12, 2003Jun 16, 2005Mirchandani Prakash K.Hybrid cemented carbide composites
US20050211475 *May 18, 2004Sep 29, 2005Mirchandani Prakash KEarth-boring bits
US20050247491 *Apr 28, 2005Nov 10, 2005Mirchandani Prakash KEarth-boring bits
US20060024140 *Jul 30, 2004Feb 2, 2006Wolff Edward CRemovable tap chasers and tap systems including the same
US20070042217 *Aug 18, 2005Feb 22, 2007Fang X DComposite cutting inserts and methods of making the same
US20070056776 *Sep 9, 2005Mar 15, 2007Overstreet James LAbrasive wear-resistant materials, drill bits and drilling tools including abrasive wear-resistant materials, methods for applying abrasive wear-resistant materials to drill bits and drilling tools, and methods for securing cutting elements to a drill bit
US20070056777 *Aug 30, 2006Mar 15, 2007Overstreet James LComposite materials including nickel-based matrix materials and hard particles, tools including such materials, and methods of using such materials
US20070102198 *Nov 10, 2005May 10, 2007Oxford James AEarth-boring rotary drill bits and methods of forming earth-boring rotary drill bits
US20070102199 *Nov 10, 2005May 10, 2007Smith Redd HEarth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies
US20070102200 *Sep 29, 2006May 10, 2007Heeman ChoeEarth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials, and methods for forming such bits
US20080073125 *Sep 27, 2007Mar 27, 2008Eason Jimmy WAbrasive wear resistant hardfacing materials, drill bits and drilling tools including abrasive wear resistant hardfacing materials, and methods for applying abrasive wear resistant hardfacing materials to drill bits and drilling tools
US20080083568 *Sep 28, 2007Apr 10, 2008Overstreet James LMethods for applying wear-resistant material to exterior surfaces of earth-boring tools and resulting structures
US20080135305 *Dec 7, 2006Jun 12, 2008Baker Hughes IncorporatedDisplacement members and methods of using such displacement members to form bit bodies of earth-boring rotary drill bits
US20080156148 *Dec 27, 2006Jul 3, 2008Baker Hughes IncorporatedMethods and systems for compaction of powders in forming earth-boring tools
US20080163723 *Feb 20, 2008Jul 10, 2008Tdy Industries Inc.Earth-boring bits
US20080202814 *Feb 23, 2007Aug 28, 2008Lyons Nicholas JEarth-boring tools and cutter assemblies having a cutting element co-sintered with a cone structure, methods of using the same
US20080302576 *Aug 15, 2008Dec 11, 2008Baker Hughes IncorporatedEarth-boring bits
US20090113811 *Jan 8, 2009May 7, 2009Baker Hughes IncorporatedAbrasive wear-resistant materials, methods for applying such materials to earth-boring tools, and methods for securing cutting elements to earth-boring tools
US20090308662 *Jun 11, 2008Dec 17, 2009Lyons Nicholas JMethod of selectively adapting material properties across a rock bit cone
US20100000798 *Jun 23, 2009Jan 7, 2010Patel Suresh GMethod to reduce carbide erosion of pdc cutter
US20100006345 *Jul 9, 2008Jan 14, 2010Stevens John HInfiltrated, machined carbide drill bit body
US20100044115 *Aug 22, 2008Feb 25, 2010Tdy Industries, Inc.Earth-boring bit parts including hybrid cemented carbides and methods of making the same
US20100132265 *Feb 8, 2010Jun 3, 2010Baker Hughes IncorporatedAbrasive wear-resistant materials, methods for applying such materials to earth-boring tools, and methods of securing a cutting element to an earth-boring tool using such materials
US20100263935 *Jun 30, 2010Oct 21, 2010Baker Hughes IncorporatedEarth boring rotary drill bits and methods of manufacturing earth boring rotary drill bits having particle matrix composite bit bodies
US20100276205 *Jul 7, 2010Nov 4, 2010Baker Hughes IncorporatedMethods of forming earth-boring rotary drill bits
US20100303566 *Aug 4, 2010Dec 2, 2010Tdy Industries, Inc.Composite Articles
US20100307838 *Jun 5, 2009Dec 9, 2010Baker Hughes IncorporatedMethods systems and compositions for manufacturing downhole tools and downhole tool parts
US20100319492 *Aug 27, 2010Dec 23, 2010Baker Hughes IncorporatedMethods of forming bodies of earth-boring tools
US20100326739 *Sep 3, 2010Dec 30, 2010Baker Hughes IncorporatedEarth-boring tools comprising silicon carbide composite materials, and methods of forming same
US20110052931 *Aug 25, 2009Mar 3, 2011Tdy Industries, Inc.Coated Cutting Tools Having a Platinum Group Metal Concentration Gradient and Related Processes
US20110094341 *Aug 30, 2010Apr 28, 2011Baker Hughes IncorporatedMethods of forming earth boring rotary drill bits including bit bodies comprising reinforced titanium or titanium based alloy matrix materials
US20110138695 *Feb 9, 2011Jun 16, 2011Baker Hughes IncorporatedMethods for applying abrasive wear resistant materials to a surface of a drill bit
US20110142707 *Feb 7, 2011Jun 16, 2011Baker Hughes IncorporatedMethods of forming earth boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum based alloy matrix materials
US20110186354 *Jun 3, 2009Aug 4, 2011Baker Hughes IncorporatedMethods of attaching a shank to a body of an earth-boring tool including a load bearing joint and tools formed by such methods
EP2377957A1Mar 6, 2008Oct 19, 2011TDY Industries, Inc.Composite articles
Classifications
U.S. Classification112/128
International ClassificationD05B37/06
Cooperative ClassificationD05B37/063
European ClassificationD05B37/06B
Legal Events
DateCodeEventDescription
Jun 25, 1981ASAssignment
Owner name: FRITZ GEGAUF AKTIENGESELLSCHAFT BERNINA-NAEHMASCHI
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:DREIER, ERNST;HOSS, RICHARD;REEL/FRAME:003897/0454
Effective date: 19810616
Nov 8, 1983CCCertificate of correction
Dec 29, 1986FPAYFee payment
Year of fee payment: 4
Jan 29, 1991REMIMaintenance fee reminder mailed
Jun 30, 1991LAPSLapse for failure to pay maintenance fees
Sep 10, 1991FPExpired due to failure to pay maintenance fee
Effective date: 19910630